If the match value is not sent in with trailing spaces to make it 32 chars long, the match will fail. At least this is the case in Oracle.

Judging from what my copy of Oracle does, the output of select 'yes' from dual where 'hello ' = 'hello'; may surprise you.

The SQL-92 standard says that trailing spaces should not affect whether two things are =, and Oracle seems to be in compliance. I think that any other behaviour would be a bug.

Trailing spaces will affect like, decode, and so on though. And, of course, if you are actually fetching back the value and comparing in Perl, then you will definitely see the difference.

So depending on how you intend to do the lookup, trailing spaces might not matter to you.

In reply to Re: Re: Re: OT: Is MD5 ALWAYS 32 character long? by tilly
in thread OT: Is MD5 ALWAYS 32 character long? by DaWolf

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.